﻿/*
* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
*
* This software is provided 'as-is', without any express or implied
* warranty.  In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/

package Box2D.Common.Math{

   
import Box2D.Common.*;
   
   
/// A transform contains translation and rotation. It is used to represent
/// the position and orientation of rigid frames.
public class b2XForm
{
   /// The default constructor does nothing (for performance).
   public function b2XForm(pos:b2Vec2=null, r:b2Mat22=null) : void 
   {
      if (pos){
         position.SetV(pos);
         R.SetM(r);

      }
   }

   /// Initialize using a position vector and a rotation matrix.
   public function Initialize(pos:b2Vec2, r:b2Mat22) : void 
   {
      position.SetV(pos);
      R.SetM(r);
   }

   /// Set this to the identity transform.
   public function SetIdentity() : void
   {
      position.SetZero();
      R.SetIdentity();
   }

   

   public function Set(x:b2XForm) : void{

      position.SetV(x.position);

      R.SetM(x.R);

   }

   public var position:b2Vec2 = new b2Vec2;
   public var R:b2Mat22 = new b2Mat22();
};

}